EP2005448A2 - Lifting magnet and method for the production thereof - Google Patents
Lifting magnet and method for the production thereofInfo
- Publication number
- EP2005448A2 EP2005448A2 EP07711610A EP07711610A EP2005448A2 EP 2005448 A2 EP2005448 A2 EP 2005448A2 EP 07711610 A EP07711610 A EP 07711610A EP 07711610 A EP07711610 A EP 07711610A EP 2005448 A2 EP2005448 A2 EP 2005448A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cone
- disc
- housing
- yoke
- positively
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F7/1607—Armatures entering the winding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/081—Magnetic constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/127—Assembling
Definitions
- the invention relates to a lifting magnet according to the preamble of claim 1 and a manufacturing method of such a magnet according to claim 11.
- Solenoids are actuating solenoids with which switching or control functions are performed.
- the anchor as an actuator can take any intermediate positions and must hold them even with opposing forces.
- the lifting magnets work either pushing or pulling.
- the return to the currentless stroke output position usually takes place by a force acting against the magnetic force compression spring.
- a widely used construction form of lifting magnets is the pot magnet.
- This magnetic construction consists of at least three magnetic components: a cylindrical, hollow magnetic body, which is composed of pole, yoke and a non-magnetic, flux-conducting housing, embedded therein is an axially extending cylindrical coil body with current-carrying coil, and the cylindrical armature, at its end in the stroke direction, a guide rod is arranged as an actuating element and carries out the lifting movements within the magnetic body (DE 44 39 422 A1).
- the pole of the magnetic body is divided into an axial cylindrical region and a radial region for manufacturing reasons. Both areas are either a component (DE 44 38 158 A1), or could for manufacturing reasons also consist of two different components.
- the axial region of the pole which is referred to below as a cone, is essentially a cylindrical body, which is arranged in the opening of the magnetic body. It has at its end facing the armature a sloping in the direction of the armature contour, which are designed so that the lifting force generated by magnetic force is proportional to the applied current in the coil (DE 44 39 422 A19).
- the cylindrical components In its interior, the cylindrical components on a central through hole, which is penetrated by the actuating rod of the armature.
- the radial region of the pole is disk-shaped and provided with a central opening whose axial region is connected to the outer diameter of the cone.
- the radially extending portion of this component has a planar bearing surface, which is connected to the end of the bobbin and the housing. Due to the disk-shaped arrangement, this component is referred to below as a cone disk.
- the storage and guidance of the cylindrical armature in the opening of the magnetic body takes place in a bearing sleeve.
- the axially extending portion of the sleeve engages over the cone at its open end.
- the bearing sleeve can be configured as a pot closed on one side or as a tube.
- the yoke of the magnetic body is arranged on the end of the bobbin opposite the cone. Similar to the conical disk, this disk-shaped component has a central opening which is partially or completely penetrated by the end of the bearing sleeve.
- the component referred to below as a yoke disc has a radial recess or a passage and is in contact with its axial inner region with the bearing sleeve. By contrast, the outer axial region is firmly connected to the flow-guiding housing at this point.
- the individual components of the magnet such as the yoke disc, the housing and the cone disc are individually connected together in a special joining and pressing process and formed into a hollow body according to the prior art.
- the individual components are put together and connected to each other at the joints by clamping.
- a large clearance is required, which results in high concentricity deviations during caulking (DE 102 38 840 A1).
- a manufacturing method for a solenoid is known in which individual components of the magnet are summarized prior to final assembly in advance to form several modules. The individual assemblies are then assembled into a finished magnet.
- the armature is first equipped with the actuating rod and inserted into the guide sleeve or in the guide tube in. Since an axial skewing of the armature in the bearing sleeve is responsible for magnetic transverse forces, the guide diameter of the armature and the sleeve or of the tube are manufactured in one clamping in order to keep concentricity deviations minimal.
- the cylindrical cone is inserted into the storage / guide sleeve and firmly connected at its optimum position, taking into account the stroke of the armature with the wall of the sleeve or the tube in this position.
- the cartridge-shaped subassembly thus formed is then subsequently installed in the hollow body, which represents a further subassembly, formed from the housing with inserted coil, the yoke disc and the cone disc.
- the improvement of the hysteresis is achieved by centering the magnetic flux in the flux-guiding parts of the magnetic body, whereby lateral forces are reduced. It will reach a uniform magnetic air gap around the anchor.
- the guide body (sleeve or tube), stored after installation centrally to the yoke disc and the pole. The individual components can thus be manufactured and assembled with less play.
- the manufacturing method for the magnet is based on the known modular system, which consists of several components of the first individual components of the magnetic body form, which can also be used for other applications, and assemble the magnets from given assemblies.
- the yoke disc is placed only loosely during manufacture on the flat surface of the housing end and aligned in this position on the bearing sleeve. Subsequently, the fixation takes place axially on the plane surface of the housing end. As a result, no transverse forces at the connection point that cause the joining process occur at this point.
- the yoke disc can thus be placed on the guide sleeve with very close clearance in the production process and in this position will be connected to the planar surface of the housing.
- the yoke disc is not pressed into the housing during production, but is loosely placed on it and the plane surface is connected to the housing end.
- the guide sleeve or the guide tube is installed stress-free and centered with the yoke disc.
- the preferred type of joint for connecting the yoke disc to the housing is welding, which offers advantages over caulking of the components.
- the non-positive and / or positive joining of the two modules is advantageously carried out by pressing in, caulking or welding.
- the bearing sleeve is positively and / or positively connected only with the cone, which is positively and / or positively connected to the cone disk. This compound is preferably welded.
- a radial seal is provided between the bearing tube or the Lagerh ⁇ lse and the cone, which is designed in particular as O-rings. This is the case when the magnet space is tightly filled with oil or gasoline or other medium.
- the housing is advantageously non-positively and / or positively connected with the cone disk.
- This compound which is usually caulked or welded, is particularly advantageous in the design of the magnet when conical disk and cone, so the entire pole, form a single component.
- this component projects radially outward at the open end of the cartridge.
- the pole comprises two separate components - the cylindrical cone and the radially mounted on the cone pole disk -, the junction cone / conical disk is non-positively and / or positively connect with each other.
- the cylindrical cone advantageously at its end facing the conical disk on a radially extending annular elevation, which serves as an axial stop in the introduction of the cone disk on the cone.
- the flux-guiding housing is advantageously designed as a tubular jacket made of a stampable and bendable material.
- the tubular material is rolled around the interior of the magnet.
- the "rolled" jacket and the use of a thin-walled tube is possible as a housing in which the necessary openings for the connecting flange and other components are punched in advance.
- the coil has cams on its plane surface in the axial direction. These press during assembly in the bearing surface of the yoke disc. The coil is axially fixed in the "cage" of the housing through the cone disc and yoke disc.
- connection of the yoke disc with the flat surface of the housing end and the orientation in this position on the bearing sleeve or the bearing tube advantageously two production methods are applicable.
- anchor and the bearing sleeve or the bearing tube form a first assembly, which are joined together to form a cartridge-shaped body.
- the housing with the coil, the conical disk and the yoke disk are combined to form a second assembly and assembled into a cylindrical, hollow-shaped structure.
- the cartridge-shaped structure is then introduced into the coaxial opening of the hollow body and both structures are non-positively and / or positively connected to each other.
- the yoke plate is connected to the housing end prior to insertion of the cartridge into the hollow body.
- the cartridge is only radially centered after insertion into the hollow body in the yoke disc.
- the yoke disc is loosely attached to the cartridge and is guided therein only radially.
- the axial guidance takes place at the opposite end by the stop of the cone with the conical disk. The stop at the axial end of the cone is thereby pressed into the cone disk.
- the yoke disc and the cone disc are advantageously aligned during joining to the hollow body with a teaching mandrel.
- the joining to the hollow body takes place in one clamping, wherein the coil is inserted in the clamping.
- After the loose introduction of the anchor in its guide sleeve or against a stop in the execution as a tube is introduced in the stroke distance to the anchor of the cone in the bearing tube or bearing sleeve and connected to the inner wall of the tube or sleeve in annular grooves of the cone.
- the attachment of the cartridge in the hollow body can advantageously be realized in a similar manner. If an axial stop for the cartridge is present in both directions, it can also be inserted loosely into the hollow body.
- the yoke plate in contrast to the method described above, not placed on the "empty" hollow body, but as the last step in the magnet manufacturing, after all other modules are joined, attached to the flat surface of the housing.
- a cartridge formation of the assembly of the guide tube or the guide sleeve and the armature which is inserted in advance in the guide sleeve.
- the anchor When designed as a pipe must be ensured by mounting means that the anchor is secured at its the yoke disc facing the end against falling out.
- a second assembly is formed from the cone and the cone disk.
- the cone disk is pushed onto the outer wall of the cylinder-shaped end facing away from the armature and is positively and / or positively connected there.
- the cone has at this end an annular radial elevation. This serves both as centering and as a stop for the cone disk to be introduced.
- the tubular housing On this structure then the tubular housing is placed.
- the third assembly comprises a cylindrical body consisting of first and second assemblies.
- the guide sleeve or guide tube assembly with armature (first module) opens the cone with cone disk (second assembly) fixed and assembled.
- the housing is placed on the third module and the coil is inserted into the housing.
- the yoke disc is placed on the entire third assembly.
- Fig. 1 shows a cross-sectional view of the lifting magnet.
- FIG. 2 shows a schematic representation of a first variant of the manufacturing method of the magnet of FIG. 1.
- FIG. 3 shows an alternative variant of the manufacturing method of the magnet of FIG. 1.
- Fig. 1 shows a cross-sectional view of a solenoid in the design of a pot magnet, which is used as an actuator for different valve devices and valve functions.
- the pilot and switching valves used for the application are, for example, made by the solenoid according to the invention.
- the solenoid shown in Fig. 1 can also be used in the function as a proportional solenoid, which establishes a proportional relationship between the applied current and the lifting movement or magnetic force.
- a housing 1 guiding the magnetic flux with a cylindrical coil body 10 embedded in it can be seen.
- a current-carrying coil 4 is integrated in the bobbin 10.
- the power is supplied from the outside via an electrical connection point 11, which is externally attached to the housing 1 via a radial connecting flange 12.
- the housing 1 forms an outer jacket as environmental protection and consists of a rolled around the interior of the magnet, magnetic material, which consists of stamped parts or of a stamped tube. The ends of the shell are connected together in an axially extending connection.
- the pole of the magnet is arranged, which has a conical disk 2 as a radially extending region, which is connected to the bobbin 10 and a flat surface of the housing 1 arranged there. This is done by attaching with laser or with the help of a TIG welding torch (Tungsten Innert gas welding).
- TIG welding torch Tungsten Innert gas welding
- the armature 6 is designed as a cylindrical piston and is movably arranged in a guide and / or bearing sleeve 5, which is arranged in the opening of the hollow body 14. Magnetic force causes the armature 6 strokes in the direction of the magnetic pole.
- the right stroke limit for the armature 6 forms the sleeve bottom 18.
- the magnetic space in the bearing sleeve with a medium Is filled. So that the medium can flow off during the lifting movement, the armature piston 6 can additionally have two longitudinal bores, as shown in FIG. 1.
- the magnetic pole additionally has an axial region, which is arranged for the most part in the bearing sleeve 5 and is encompassed by it.
- This cylindrical member forms the cone 3, which additionally has a central passage 15 which is penetrated by an actuating rod 8 which is connected at its one end to the armature 6 and the other end, the lifting movement of the armature 6 on an actuator (valve spool o. ⁇ hnl .) transmits for the follower element.
- the bearing of the armature 6 takes place exclusively via the actuating rod 8 at a bearing point 16 in the passage 15 of the cone 3.
- the bearing and guide sleeve 9 is fixed force and / or positive fit only on the cone 3.
- the cone 3 has, at its end facing the armature 6, a control cone 9 (armature counterpart) with a contour sloping counter to the stroke direction and a recess 17 which engages in a correspondingly configured recess 13 of the armature 6.
- the contour design directly influences the force - stroke characteristic of the magnet.
- the cone 3 At its end facing away from the armature 6, the cone 3 has an annular elevation 21, which serves as a centering or stop for the conical disk 2 fastened there, which is axially non-positive and / or positive at its inner diameter with the cone 3. is connected conclusively and is fixed with its radial surface with the bobbin 10 and the housing 1.
- the bearing sleeve 5 engages with its sleeve bottom 18 facing the end of the inner diameter of the yoke disc 7. It is only radially aligned with the bearing sleeve 5. At this point, no positive and / or positive connection is provided.
- the sleeve bottom 18 thus forms the right, axial boundary of the magnet.
- the magnet can be assembled in two different ways, with both manufacturing methods in common, that the individual components of the magnet are combined to form assemblies and assembled different assemblies to the finished magnet.
- the modular system used in this case is thus suitable for different applications.
- the cone 3, the armature 6 with attached actuating rod 8 and the bearing sleeve 5 are combined to form a first assembly (cartridge 19), as shown in the left-hand area of FIG.
- the armature 6 is gripped, for example, from a pallet supply, equipped with the actuation rod 8 and inserted into the bearing sleeve 5.
- the cone 3 is pressed into the bearing sleeve 5 and can be tightly welded with laser or with the TIG welding torch.
- the second subassembly forms the hollow body 14, which comprises the conical disk 2, the reel body 10 with inserted reel 4, the housing 1 and the yoke disk 7. This is shown in the right-hand area of FIG. 2.
- the four components are aligned in a single clamping with a teaching mandrel, initially in the bobbin 10, the coil 4 is inserted and introduced into the housing 1 only.
- These components form a central part of the hollow body 14, des- sen left end parts of the cone disc 2 and the right end parts of the yoke disc 7 forms. Both components are attached to the central part and connected to each other either by laser or the TIG welding torch to the hollow body 14.
- the cartridge 19 is loosely inserted in the direction of arrow 20 to the stop of the annular elevation 21. Both modules are pressed together.
- the two assemblies are then fixed together and put together.
- the housing 1 is placed on the thus formed third assembly.
- the bobbin 10 with the coil 4 is inserted via a fourth structural group formed in this way.
- the yoke plate 7 is fixed on the bearing sleeve 5 from the right and pressed against the housing plan surface 22 and welded thereto.
- the joint cone / conical disk is aligned together with the yoke disc 7 and non-positively and / or positively connected.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Magnetically Actuated Valves (AREA)
- Powder Metallurgy (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Soft Magnetic Materials (AREA)
- Electromagnets (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006011078A DE102006011078B4 (en) | 2006-03-08 | 2006-03-08 | Solenoid and method for its production |
PCT/EP2007/001482 WO2007101550A2 (en) | 2006-03-08 | 2007-02-21 | Lifting magnet and method for the production thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2005448A2 true EP2005448A2 (en) | 2008-12-24 |
EP2005448B1 EP2005448B1 (en) | 2010-09-22 |
Family
ID=38203202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07711610A Not-in-force EP2005448B1 (en) | 2006-03-08 | 2007-02-21 | Lifting magnet and method for the production thereof |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2005448B1 (en) |
AT (1) | ATE482457T1 (en) |
DE (2) | DE102006011078B4 (en) |
WO (1) | WO2007101550A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011115614A1 (en) | 2011-09-27 | 2013-03-28 | Thomas Magnete Gmbh | proportional solenoid |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007043554A1 (en) | 2007-03-10 | 2008-09-11 | Continental Teves Ag & Co. Ohg | valve assembly |
DE102009043320B4 (en) * | 2009-09-28 | 2012-01-12 | Hydraulik-Ring Gmbh | Electrohydraulic valve |
DE102011003169A1 (en) * | 2011-01-26 | 2012-07-26 | Continental Teves Ag & Co. Ohg | magnetic valve |
DE102011011362B4 (en) | 2011-02-16 | 2014-03-06 | Thomas Magnete Gmbh | Low-hysteresis proportional magnet |
DE102011117688B3 (en) * | 2011-11-04 | 2013-03-07 | Thomas Magnete Gmbh | Electrical lifting magnet, has casing provided with conical disk and yoke disk that are connected with each other through projection welding process, where disks are aligned with each other by component through welding apparatus |
DE102012223430A1 (en) | 2012-12-17 | 2014-06-18 | Robert Bosch Gmbh | Electromagnetic actuator |
DE102013226619A1 (en) | 2013-12-19 | 2015-06-25 | Robert Bosch Gmbh | Method for producing a pole tube, pole tube for an electromagnet and solenoid valve |
DE102014002108A1 (en) * | 2014-02-15 | 2015-08-20 | Thomas Magnete Gmbh | Method for producing a proportional electromagnet and electromagnet |
DE102014109575A1 (en) * | 2014-07-09 | 2016-01-14 | Pierburg Gmbh & Co Kg | Electromagnetic valve for the automotive sector |
DE102014010876B3 (en) * | 2014-07-25 | 2015-10-01 | Hilite Germany Gmbh | Actuator for a hydraulic valve of a Nockenwellenschwenkmotorverstellers and hydraulic valve with an actuator for a Nockenwellenschwenkmotorversteller |
DE102014113547B4 (en) * | 2014-09-19 | 2022-01-05 | Pierburg Gmbh | Electromagnetic actuator for a diverter valve |
DE102017119001A1 (en) * | 2017-08-21 | 2019-02-21 | Kendrion (Villingen) Gmbh | Electromagnetic actuator |
DE102019121192A1 (en) * | 2019-08-06 | 2021-02-11 | Rapa Automotive Gmbh & Co. Kg | EMPTY STROKE ADJUSTMENT OF A MAGNETIC ACTUATOR |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1650799A (en) * | 1924-05-17 | 1927-11-29 | North East Electric Co | Electric solenoid |
US3274525A (en) * | 1964-08-28 | 1966-09-20 | Comar Electric Company | Solenoid device having a non-rotatably mounted coil bobbin |
GB1227087A (en) * | 1969-07-03 | 1971-03-31 | ||
DE4438158A1 (en) * | 1993-10-27 | 1995-05-04 | Thomas Magnete Gmbh | Electrical solenoid |
US5605318A (en) * | 1994-04-14 | 1997-02-25 | Eaton Corporation | Electric expansion valve |
DE4439422C2 (en) * | 1994-11-04 | 1996-09-19 | Bso Steuerungstechnik Gmbh | Pressure-tight electromagnetic switching device |
JP2002505408A (en) * | 1998-03-03 | 2002-02-19 | コンティネンタル・テーベス・アクチエンゲゼルシヤフト・ウント・コンパニー・オッフェネ・ハンデルスゲゼルシヤフト | solenoid valve |
DE10238840A1 (en) * | 2002-08-23 | 2004-03-04 | Thomas Magnete Gmbh | Electromagnetic linear actuator has the coil and yoke within plastic body with an end cap enclosing the assembly and providing guidance for armature |
DE102004028871A1 (en) * | 2004-06-15 | 2006-01-05 | Hydac Electronic Gmbh | Actuating device, in particular for actuating valves |
-
2006
- 2006-03-08 DE DE102006011078A patent/DE102006011078B4/en not_active Expired - Fee Related
-
2007
- 2007-02-21 EP EP07711610A patent/EP2005448B1/en not_active Not-in-force
- 2007-02-21 WO PCT/EP2007/001482 patent/WO2007101550A2/en active Application Filing
- 2007-02-21 DE DE502007005137T patent/DE502007005137D1/en active Active
- 2007-02-21 AT AT07711610T patent/ATE482457T1/en active
Non-Patent Citations (1)
Title |
---|
See references of WO2007101550A3 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011115614A1 (en) | 2011-09-27 | 2013-03-28 | Thomas Magnete Gmbh | proportional solenoid |
WO2013045066A1 (en) | 2011-09-27 | 2013-04-04 | Thomas Magnete Gmbh | Proportional magnet |
Also Published As
Publication number | Publication date |
---|---|
DE502007005137D1 (en) | 2010-11-04 |
DE102006011078B4 (en) | 2011-05-05 |
WO2007101550A3 (en) | 2007-12-21 |
EP2005448B1 (en) | 2010-09-22 |
ATE482457T1 (en) | 2010-10-15 |
DE102006011078A1 (en) | 2007-09-13 |
WO2007101550A2 (en) | 2007-09-13 |
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